package day1212;

import day1225.Test4;

import java.util.Scanner;

public class File8 {
    public static void main(String[] args) {
        int year=new Scanner(System.in).nextInt();
        String rs=   (year % 400 == 0   ||   (year%4==0 &&  year % 100 != 0 ))  ?"是闰年":"不是世纪闰年";
        System.out.println(rs);
    }
}
